docs

fixed broken links @site link from page reorg; added some images for vive devices; minor touchup of some vive pages (#75)

Merge pull request #74 from VRCFaceTracking/hardware-reorg

tiny reword in quest pro index page

updated focus3_xre page to include focus to vision; minor updates to the page including module download from registry; added focus vision to list of compatible hardware in hardware_table_vr

dirty reorg of quest pro page